Site Reliability Engineer

Capital on Tap

We’re Capital on Tap 👋 💳 Capital on Tap started because small businesses were underserved. Big banks were slow, their products weren't fit for purpose, and small business owners often couldn't access what they needed. We set out to fix that. Today we're a financial platform - not just a credit card company. We offer a best-in-class business credit card, SME-focused spend management platform, a savings product that hit £1 billion in funds within its first year, and a growing suite of tools and financial products that make running a small business easier.  1,000+ employees, £20bn in annual card spend, 200,000+ customers, 17,000+ Trustpilot reviews averaging 4.7 stars, and we're profitable. We’ve done a pretty good job so far, but we’re just getting started!  📍London, Old Street | 🏢 2 Days in Office SRE at Capital On Tap 🌞 At Capital On Tap, we run a hybrid embedded SRE model. We aim to work closely with the teams within Capital On Tap to provide them the best support. Our main objective currently is to gain as much visibility into our platform's health while offering scalable solutions.  What You’ll be doing:  As a Site Reliability Engineer (SRE) you will help ensure our platforms are fast, reliable, and scalable. You’ll design, build, and monitor systems, prevent issues before they happen. Using SLAs, SLIs, and SLOs, you’ll guide feature launches while maintaining services that everyone can depend on. * Manage and automate Azure, Datadog, NGINX & Cloudflare * Develop and monitor Kubernetes and Serverless resources * Maintain infrastructure code with Terraform & CRDs / Crossplane * Improve systems, processes, and technologies; consult stakeholders to enhance platform performance * Getting involved in new application architecture & design processes * Design solutions to reduce toil, automate repetitive tasks and streamline workflows to reduce manual work and boost team productivity. * Create SLIs and SLOs; increase application visibility * Align with the Product team on SLAs and core service objectives * Collaborate with Platform Engineers for automated solutions and pipelines * Enhance user experience with infrastructure and pipeline optimisation  * Support CI/CD tools such as Azure Devops, Octopus Deploy and Flux to streamline software delivery * Lead incident troubleshooting to safeguard customer experience We’re Looking For 🔎 Required skills: * Experience in managing a public cloud (Azure advantageous) * Experience in Azure DevOps, Octopus, Flux or other CI/CD tools * Experience with Linux and Microsoft Systems * Excellent communication skills and ability to collaborate with multiple teams in an agile environment * Proficient in contributing to IaC technologies involving expertise in writing, managing, and optimising infrastructure with tools such as Terraform and Pulumi  * Experience working with a cloud monitoring solution (advantageous to have DataDog)  * Experience with Kubernetes and Docker * Experience in at least one scripting language (Python, PowerShell, Go)   Interview Process 🤝 * First stage: 30-minute intro, CV review, and values with Talent Partner * Second stage: 60 minute “Tech Chat” with Team Manager * Final stage: 75-minute Technical Task + 30 minute Interview with Head of Platform Engineering Diversity & Inclusion 🌈 We welcome, consider and encourage applications from anyone who shares our commitment to inclusivity. Join us in creating a space where authenticity thrives, and everyone can do their best work. Great Work Deserves Great Perks We try not to take ourselves too seriously (all the time) so we make sure our office is decked out with a pool table, arcade machine, beer tap, and a couple of office dogs thrown in for good measure. Check out our benefits: 🏥 Private Healthcare including dental and opticians services through Vitality ✈️ Worldwide travel insurance through Vitality 🎁 Anniversary Rewards (£250, £500, £750, 4-week fully paid sabbatical) 👛 Salary Sacrifice Pension Scheme up to 7% match 🏖️ 28 days holiday (plus bank holidays) 📖 Annual Learning and Wellbeing Budget 👪 Enhanced Parental Leave 🚲 Cycle to Work Scheme 🚂 Season Ticket Loan 💬 6 free therapy sessions per year 🐶 Dog Friendly Offices 🍫 Free drinks and snacks in our offices Check out more of our benefits, values and mission here.   Other Info 👍Check out our ‘Top Tips’ for interviewing. ✔️Keep updated on new job opportunities by following us on Linkedin. 📧Email careers@capitalontap.com if you have any questions. Excited to work here? Apply! If you’d like to progress your career within our fast growing, profitable fintech then click apply and we will aim to get back to you within 3 working days (during busy periods this could take up to 5 working days.)

GoCardless

About us GoCardless is a global bank payment company. Over 100,000 businesses, from start-ups to household names, use GoCardless to collect and send payments through direct debit, real-time payments and open banking.  GoCardless processes US$130bn+ of payments annually, across 30+ countries; helping customers collect and send both recurring and one-off payments, without the chasing, stress or expensive fees. We use AI-powered solutions to improve payment success and reduce fraud. And, with open banking connectivity to over 2,500 banks, we help our customers make faster, more informed decisions. We are headquartered in the UK with offices in London and Leeds, and additional locations in Australia, France, Ireland, Latvia, Portugal and the United States. At GoCardless, we're all about supporting you! We’re committed to making our hiring process inclusive and accessible. If you need extra support or adjustments, reach out to your Talent Partner — we’re here to help!  And remember: we don’t expect you to meet every single requirement. If you’re excited by this role, we encourage you to apply! PLATFORM ENGINEERING AT GOCARDLESS The Platform Engineering team is a unified, globally distributed team. We are currently located in London, Riga, and Lisbon. We work with all other engineering teams to empower them to build, release, run and scale their products. We operate with a strong focus on both strategic project delivery and operational excellence. OUR WORK IS A BALANCE OF: * Project Delivery: Building new platform components, from initial design to deployment. * Operational Support: Ensuring the health and stability of our systems through on-call rotations and incident management. * Business as Usual (BAU): Continuous maintenance, improvements, and support for audits and compliance. TECH STACK AND TOOLS: * Python, Ruby, Golang; * Terraform; * Atlantis  * AWS, GCP; * Kubernetes, GKE; * Github, GitHub Actions, ArgoCD; * Grafana, Prometheus; * Datadog WHAT EXCITES YOU: We use a wide range of technologies, and will never expect you to have experience with all of them. We do hope that you are enthusiastic about the infrastructure space and the impact your work can have on others. To enjoy this work you’ll be excited by: * Building and maintaining automation of new and existing infrastructure; * Appreciate and believe in building easy-to-understand and maintain tools to solve problems; * Automating operational tasks to eliminate toil using your software development skills and experience; * Ensuring that systems are safe and secure against cybersecurity threats; * Working closely with software engineers and data scientists; * Being involved in the technical design of architecture and making technical decisions; * Cloud-first engineering; * Ongoing opportunities to further develop your skills; * Care about working with people who share the same values as you and who will continually push you to grow. WHAT EXCITES US  * Experience with at least one programming language such as Python, Ruby, Golang etc.; * Experience with IaC tooling, such as Terraform; * Previous experience with Terraform automation toolings such as Terragrunt or Atlantis will be considered an advantage; * Experience with cloud computing providers such as AWS or GCP; * Experience with containerized applications; * Previous experience with container orchestration such as Kubernetes and GKE will be considered an advantage; * Experience with CI/CD tooling such as Github, GitHub Actions, ArgoCD, etc.; * Experience working with monitoring tooling such as Grafana, Prometheus, etc.; * Experience with relational databases and other datastores, especially around high availability and performance optimisation; * Awareness of DevOps and Agile principles; * Fluency in English; * Excellent teamwork and communication skills.   Base salary range: £78,400 - £117,600  Base salary ranges are based on role, job level, location, and market data.  Please note that whilst we strive to offer competitive compensation, our approach is to pay between the minimum and the mid-point of the pay range until performance can be assessed in role. Offers will take into account level of experience, interview assessment, budgets and parity between you and fellow employees at GoCardless doing similar work. (SOME OF) THE GOOD STUFF * Wellbeing - stay healthy with dedicated support and medical cover * Work away scheme - gives you the option to work away from your country of residence for up to 90 days in any 12 month period * Adaptive Working - allows you to work flexibly, around your lifestyle * Equity - all permanently employed GCs get equity to help you make a valuable contribution * Parental leave - to suit everyone embarking on life's great adventure * Learning Budget - lead your own development with an annual learning budget * Time off - generous holiday allowance, + 3 annual volunteer days, + 4 annual business-wide wellness days (‘GC Fridays’) LIFE AT GOCARDLESS   We're an organisation defined by our values; We start with why before we begin any project, to ensure it’s aligned with our mission. We act with integrity, always. We care deeply about what we do and we know it's essential that we be humble whilst we do it. Working this way creates the GC magic- the reason we all love showing up to work.  DIVERSITY & INCLUSION As of April 2025, we had 806 employees (GeeCees) globally, with 524 based in the UK, 163 based in Latvia and 119 across our other offices. To ensure that we're representative of the world around us - and to be able to review relevant benchmarks - we ask GeeCees to voluntarily disclose diversity data. This year, the proportion of GeeCees providing data increased to 88% (up from 79% in 2024). With regards to diversity within GoCardless, we can see GeeCees identifying as: Asian, Black, Mixed or Other — 25%  Neurodiverse — 9%  LGBTQIA+ — 9%  Disabled — 1%  Average age — 33 Female — 45% Male —  55%  We’re rooting for you during your application and GoCardless aims to provide reasonable adjustments to make our recruitment process as remarkable and accessible as we can. Please speak to your Talent Partner if you need extra support. If you want to learn more, you can read about our Employee Resource Groups and objectives here Sustainability We’re committed to reducing our impact on the environment, leaving a more sustainable world for future generations. Check out our sustainability action plan here. Find out more about Life at GoCardless via Twitter, Instagram and LinkedIn.

Trainline

About us We are champions of rail, inspired to build a greener, more sustainable future of travel. Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels.  Great journeys start with Trainline 🚄  Now Europe’s number 1 downloaded rail app, with over 135 million monthly visits and £6.3 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco-friendly and affordable as it should be.  Today, we're a FTSE 250 company driven by our incredible team of over 1,000 Trainliners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high-speed journey.  Introducing Reliability & Operations Engineering 👋 Trainline is a fast-growing tech company powering world-class digital journeys for millions of customers. Our platform runs primarily on AWS, built on cloud-native architecture, modern CI/CD pipelines, and strong DevOps and SRE practices. The Reliability & Operations Engineering team (ReliabilityOps) brings together SRE, Incident Management, and Database Reliability to keep our platform observable, reliable, scalable, and resilient. We partner closely with product engineering teams to enable safe delivery, respond to incidents, and continuously strengthen system reliability. We’re looking for a mid-level Site Reliability Engineer to help drive this forward. You’ll bring solid production experience, a growth mindset, and a willingness to challenge and be challenged — contributing to platform reliability while developing broader technical ownership with support from senior engineers. As an SRE at Trainline, you'll be working on...🚄 * Developing an understanding of system architecture, dependencies, and failure modes across the Trainline platform * Participating in production incident response, supporting investigation, mitigation, communication, and coordinated service restoration * Contributing to post-incident reviews and follow-up actions to improve reliability, scalability, and resilience * Taking part in the SRE on-call rotation * Designing, building, and maintaining observability using metrics, logs, events, and traces to support effective detection and diagnosis * Improving monitoring and alerting by aligning signals to business and customer impact, reducing noise and improving mean time to detection (MTTD) * Ensuring relevant operational data is surfaced quickly and clearly during live incidents * Making informed tooling and technology choices using SRE principles, balancing team and business needs * Supporting AWS-hosted infrastructure and shared platform services using infrastructure-as-code and CI/CD tooling * Collaborating with product engineering teams to ensure services are operationally ready and deployed safely * Advising on reliability and resilience practices * Writing and maintaining reliable, well-structured code and scripts to support reliability and observability goals * Prioritising work effectively and collaborating using agile processes to deliver against team and business goals Our Tech Stack 🔑 * AWS * New Relic * ELK stack * Grafana * Incident.io * Docker, ECS * Terraform * Github Actions We'd love to hear from you if you have...🔍 * Experience of SRE concepts such as SLI, SLO and error budgets. * Hands-on experience with observability tooling such as New Relic, Elastic (ELK Stack), Influx, Grafana or similar * Experience working with cloud providers (preferably AWS). * Experience troubleshooting Linux operating systems. * Experience of scripting in at least one language (preferably Python) * Understanding of load balancing and reverse proxy concepts, upstream config concepts, upstream health checks, worker & data flow concepts. * Application architecture concepts (threading, queuing, readiness checks, health checks, circuit breakers, timeouts, exponential backoff, throttling). * Experience building, maintaining and evolving time series data, retention, cardinality, deviation, moving averages and other functions. * Experience with build, deployment & configuration management tooling such as GitHub Actions and Terraform. More information: Enjoy fantastic perks like private healthcare & dental insurance, a generous work from abroad policy, 2-for-1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family-friendly benefits.  We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one!  We're operating a hybrid model and ask that Trainliners work from the office a minimum of 60% of their time over a 12-week period. We also have a 28-day Work from Abroad policy. Our values represent the things that matter most to us and what we live and breathe everyday, in everything we do:  * 💭 Think Big - We're building the future of rail  * ✔️ Own It - We focus on every customer, partner and journey  * 🤝  Travel Together - We're one team  * ♻️ Do Good - We make a positive impact  We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated. Interested in finding out more about what it's like to work at Trainline? Why not check us out on LinkedIn, Instagram and Glassdoor!